Buckle



FIG. 1 is a perspective view of a buckle showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right-side elevational view thereof;

FIG. 5 is a left-side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the drawings are employed to show unclaimed portions of the buckle, and form no part of the claimed design. 

CLAIM The ornamental design for a buckle, as shown and described. 